Life Through the Eyes of a Chicken

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Across
  1. 2. Chinese chicken breeds were brought to ____
  2. 6. Selective chicken breeding introduced the 'Theory of ____"
  3. 9. A trio of British scientists conducted extensive ____ of chickens
  4. 13. Chicken Production shifted to an ____ like factory model
  5. 14. What was the chicken a symbol for?
  6. 15. Who brought them on military campaigns?
  7. 17. The Romans consulted chickens as ____
  8. 19. What were Roosters mainly bred for?
  9. 21. What did the Zoroastrians view chickens as?
  10. 23. The Romans though chickens ____ the success of future battles
Down
  1. 1. Chinese breed were bred with European ones. This gave rise to a phenomenon called
  2. 3. The Ancient Greeks used fighting roosters as an example for young ____
  3. 4. In production chickens had only the space of a piece of ____ to move around
  4. 5. Chicken’s spread throughout the world through trade, conquest, and ____
  5. 7. What is the chicken descended from?
  6. 8. A hen will sit on a ____ of six or more eggs for 21 days
  7. 10. The Egyptian King described them as a foreign bird who "gives birth ____"
  8. 11. India's bamboo plants produce lots of
  9. 12. By the Second Millennium, chickens had spread from the Indus Valley to ____
  10. 16. Chickens became an essential part of European ____
  11. 18. Egyptians artificially incubated eggs by putting the over hot ____
  12. 20. All Chicken’s came from Southeast Asia and ____
  13. 22. ____ introduced chickens to Europe